Results 31 to 40 of about 45,082 (300)

Study the Effect of Volume Fraction of Mica With Different Particle Size on the Mechanical and Electrical Properties for Unsaturated Polyester Composites [PDF]

open access: yesEngineering and Technology Journal, 2012
This study was carried out to investigate the effect of adding mica (5, 10, 15, 20, 25 % vf) with variable particle size (35, 57, 70μm) on the mechanical and electrical properties of the unsaturated polyester composites.
Rafah A.Nasif
doaj   +1 more source

Dielectric breakdown properties of CF3I-N2 mixtures containing a small amount of SF6

open access: yesAIP Advances, 2019
CF3I-N2 mixtures have garnered much attention as potential SF6-substitutes due to their excellent dielectric strengths, and the dielectric strength of SF6-N2 mixtures has a good synergy effect. This paper attempts to propose an approach of adding a small
Hu Zhao, Yunkun Deng, Zengyao Tian
doaj   +1 more source

Dielectric Characterization of Chinese Standard Concrete for Compressive Strength Evaluation

open access: yesApplied Sciences, 2017
Dielectric characterization of concrete is essential for the wireless structural health monitoring (SHM) of concrete structures. Guo Biao (GB) concrete refers to the concrete mixed and cast in accordance with the Chinese standard. Currently, China is the
Kwok L. Chung   +5 more
doaj   +1 more source

Statistical Investigation of AC Dielectric Strength of Natural Ester Oil-Based Fe3O4, Al2O3, and SiO2 Nano-Fluids

open access: yesIEEE Access, 2019
This paper deals with the effects of conductive and insulating nanoparticles at various sizes and concentrations on the ac dielectric strength of natural ester oil, namely, MIDEL 1204.
U. Khaled, A. Beroual
semanticscholar   +1 more source

Optimization Studies on Improving the Dielectric Properties of Alkali Treated Fibers from Phaseolus Vulgaris Reinforced Polyester Composites by Central Composite Design

open access: yesJournal of Natural Fibers, 2021
This study investigates the dielectric efficiency of a composite prepared using a fiber extracted from Phaseolus vulgaris. The extraction of fiber was statistically modeled using face-centered central composite design.
B. Gurukarthik Babu   +5 more
doaj   +1 more source

Influence of Space Charge on Dielectric Property and Breakdown Strength of Polypropylene Dielectrics under Strong Electric Field

open access: yesEnergies, 2022
Space charge accumulation in polypropylene (PP) affect the dielectric properties and breakdown strength of the material. The pre-injected charge in PP under the action of different polarity voltage is quantitatively characterized, and the effects of the ...
Zhaoliang Xing   +6 more
doaj   +1 more source

Dielectric and Thermal Properties of Carrot Fibers –Epoxy Composites [PDF]

open access: yesEngineering and Technology Journal, 2011
Epoxy composites were prepared with two sizes of carrot fibers in different weight percent (10%, 20%, 30% and 40%) by hand lay-up technique. The dielectric constant and dissipation factor (tanä) of pure epoxy resin and composites were measured in a ...
Wafaa A. Hussain
doaj   +1 more source

3. Remarks on Dielectric Strength [PDF]

open access: yesProceedings of the Royal Society of Edinburgh, 1882
The phenomena accompanying the disruptive discharge of electricity are, in the present state of electric science, among the most interesting known, because they are the least understood, and, so far as we know, the least concordant with our preconceived ideas. The simplest way of representing the facts is to imagine with Faraday that the non-conducting
openaire   +1 more source

Characteristics of Gel Time and Dielectric Strength of Epoxy Composite According to the Mixing Ratio of Micro-Fillers

open access: yesEnergies, 2020
The dielectric strength and gel time of epoxy composites vary with the mixing ratio of epoxy resin, hardener, additives, filler, etc., and especially the gel time affects the productivity and economics of ultra-high-voltage (UHV) equipment.
Dong-Hun Oh   +5 more
doaj   +1 more source

Layered Al2O3-SiO2 and Al2O3-Ta2O5 thin-film composites for high dielectric strength, deposited by pulsed direct current and radio frequency magnetron sputtering

open access: yesApplications of Surface Science, 2019
Multilayer thin films have the potential to act as high dielectric strength insulation for wire and microelectronics. In this study, films consisting of 2, 4 or 8 layers, composed of Al2O3 with SiO2 or Ta2O5, were prepared via pulsed direct current and ...
B. Hanby   +5 more
semanticscholar   +1 more source

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